cvs commit: src/lib/libthr/thread thr_kern.c thr_private.h

[Mike Makonnen]

mtm         2003/05/25 00:58:22 PDT

  FreeBSD src repository

  Modified files:
    lib/libthr/thread    thr_kern.c thr_private.h 
  Log:
  The libthr code makes use of higher-level primitives (pthread_mutex_t and
  pthread_cond_t) internaly in addition to the low-level spinlock_t. The
  garbage collector mutex and condition variable are two such examples. This
  might lead to critical sections nested within critical sections. Implement
  a reference counting mechanism so that signals are masked only on the first
  entry and unmasked on the last exit.
  
  I'm not sure I like the idea of nested critical sections, but if
  the library is going to use the pthread primitives it might be necessary.
  
  Approved by:    re/blanket libthr
  
  Revision  Changes    Path
  1.8       +13 -0     src/lib/libthr/thread/thr_kern.c
  1.10      +1 -0      src/lib/libthr/thread/thr_private.h